By using a remodeled supersonic CW HF chemical laser, the direct production of electronically excited species NF(b1∑+)becomes feasible in the F-F2-NH3 system. This is most likely accomplished via the mechanism proposed by Hack, et at plds the V-E energy transfer process NF(a1△)+HF(v)→NF(b1∑+)+HF. The intensity distribution on NF b1∑+→X3∑- emission along the gas flow direction, as well as the quenching rate constants of NF(b1∑+)by NH3 and DF are obtained.